| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] [prep] a period [prep] [noun] | 19 |
|
| 2 | [adj] over a [noun] [prep] [noun] | 17 |
|
| 3 | [adj] over a [noun sg] [prep] [noun] | 16 |
|
| 4 | [adj] over a period [prep] [noun] | 15 |
|
| 5 | [adj] over [art] period [prep] [noun] | 12 |
|
| 6 | [adj] over a period [prep] [noun] | 11 |
|
| 7 | [adj] over a period [prep] [noun] | 11 |
|
